CN105973350B - A kind of fluid flowmeter dynamic response characteristic self-checking unit - Google Patents
A kind of fluid flowmeter dynamic response characteristic self-checking unit Download PDFInfo
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- CN105973350B CN105973350B CN201610273686.0A CN201610273686A CN105973350B CN 105973350 B CN105973350 B CN 105973350B CN 201610273686 A CN201610273686 A CN 201610273686A CN 105973350 B CN105973350 B CN 105973350B
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01F—MEASURING VOLUME, VOLUME FLOW, MASS FLOW OR LIQUID LEVEL; METERING BY VOLUME
- G01F25/00—Testing or calibration of apparatus for measuring volume, volume flow or liquid level or for metering by volume
- G01F25/10—Testing or calibration of apparatus for measuring volume, volume flow or liquid level or for metering by volume of flowmeters
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Abstract
The invention discloses a kind of fluid flowmeter dynamic response characteristic self-checking units, including liquid reserve tank, electric reciprocating pump, flow control valve, acceleration switching valve, pressure reducing valve, data acquisition module, flowmeter to be measured and computer；The periodic swinging flow of adaptation is generated by the reasonable disposition of flow control valve and acceleration switching valve, then stable state maximum, minimum discharge and the dynamic pulse amplitude measured with flowmeter itself, its dynamic response characteristic is assessed based on amplitude distortion determination method, achievees the purpose that self-test.
Description
Technical field
The present invention relates to dynamic flow measurement technical field, in particular to a kind of fluid flowmeter dynamic response characteristic self-tests
Device.
Background technique
The flow measurement of fluid is widely present in the modern sciences such as aviation and navigation, petroleum industry and nuclear energy and engineering field
In.With the expansion of application field, the progress of science and technology, urgent demand also proposed to the measurement of dynamic flow.Dynamically
Flow refers to is superimposed with periodical or random pulsation on steady state flow.Existing flowmeter, such as electromagnetic flowmeter, differential stream
Meter, ultrasonic flowmeter, turbine flowmeter etc., are generally applicable to steady state condition, then need to consider when measuring dynamic flow
The dynamic response characteristic of flowmeter.If dynamic response is slower, the response time is longer, then the data of flowmeter measurement will appear mistake
Very, it is unfavorable for the measurement or monitoring of dynamic flow, and then influences system reliability of operation and safety.Therefore, to flowmeter
Dynamic response characteristic assessed, be by flow meter applications in the prerequisite of dynamic flow measurement.
In order to measure dynamic flow, domestic and foreign scholars are directed to different flowmeters respectively and have carried out dynamic analysis, such as
" turbine flowmeter dynamic analysis ", Cui of " the gear meter Research on Dynamic Characteristic " of Li Wenhong et al., Wang Jianqiang et al.
Asia winged " analysis of mass flowmenter dynamic characteristic ", Tong Meng et al. " coriolis mass flowmeters dynamic characteristic is ground
Study carefully ".The studies above carries out theoretical model analysis to different flow meter respectively, and the dynamics for being analyzed from principle various flowmeters is special
Property, and then propose the method for improving flowmeter dynamic response capability.
Although domestic and foreign scholars have carried out dynamic characteristic theory analysis to different flowmeters, and develop various for surveying
Measure dynamic flow instrument, but by such flow meter applications when industrial, it is still desirable to its dynamic response characteristic carry out
Assessment or verifying, and industrial practical flowmeter dynamic response characteristic appraisal procedure is still less at present.
Summary of the invention
The purpose of the present invention is to provide a kind of fluid flowmeter dynamic response characteristic self-checking unit, make it without relying on it
His standard scale group, and only need to be detected flowmeter own signal i.e. and can reach the purpose for assessing its dynamic property.
The purpose of the invention is achieved by the following technical solution:
A kind of fluid flowmeter dynamic response characteristic self-checking unit, including
Liquid reserve tank, the liquid reserve tank is for storing and providing single-phase liquid；
Electric reciprocating pump, the electric reciprocating pump are connect with liquid reserve tank, for driving the single-phase liquid in pipeline；
Flow control valve A, the flow control valve A is connect with electric reciprocating pump, for adjusting the stream of fluid in Trunk Line
Amount；
Acceleration switching valve, the acceleration switching valve is in parallel with flow control valve A, and the dynamic for adjusting fluid flow becomes
Change；
Flowmeter to be checked, the flowmeter to be checked is connected with the flow control valve A, for detecting the dynamic of fluid to be measured
Flow, and the acceleration switching valve, flow control valve A and flowmeter to be checked constitute test line；
Flow control valve B, the flow control valve B is arranged on the by-pass line in parallel with test line, for adjusting
The flow of fluid in by-pass line；
Computer, the computer are used to acquire the preservation, analysis and display of data；
Data acquisition module, the data acquisition module are used to acquire the output signal of flowmeter to be checked, and convert output
To computer.
In the use of the present invention, the monophasic fluid from liquid reserve tank is divided into two-way after being driven by electric reciprocating pump, flow all the way
Enter test line, flows through flow control valve A and acceleration switching valve, then flow out after flowmeter measuring flow to be checked；It flows into all the way
By-pass line converges after flowing through flow control valve B with test line, and the fluid after converging returns to liquid reserve tank, forms open circulation
Circuit；And simultaneously, the flowmeter measurement signals in test line are output to computer, i.e. computer by data acquisition module conversion
Convection current flowmeter measurement signal data is shown.
It further, further include pressure reducing valve, test line is connect by pressure reducing valve with liquid reserve tank after crossing with by-pass line.
For the fluid flow test accuracy for improving flowmeter to be measured, it will usually which carrying out multiple circular flow detection easily acquisition multiple groups can be real
The data now compared, test line are connected to by pressure reducing valve with liquid reserve tank after crossing with by-pass line, and by pressure reducing valve to pipe
The adjusting of line fluid pressure to control the flow rate of the flow in entire pipeline, and then is the multiple measurement number of flowmeter
According to offer support.
Compared with prior art, the present invention having the following advantages and benefits:
1, the present invention can be directed to particular flow rate and response characteristic demand, pass through the reasonable of flow control valve and acceleration switching valve
Configuration generates the periodic swinging flow of adaptation, is then based on amplitude distortion determination method, the stable state generated with flowmeter itself
Its dynamic response characteristic is assessed with Dynamic Signal, achievees the purpose that self-test；
2, the survey visual result image that the present invention examines, without relying on other standards table group, operation simple with structure is just
Feature prompt, applicability is wide；
3, assessment or verifying that the present invention can be used in industrial application and scientific research to dynamic flow measurement technology.
Detailed description of the invention
Attached drawing described herein is used to provide to further understand the embodiment of the present invention, constitutes one of the application
Point, do not constitute the restriction to the embodiment of the present invention.In the accompanying drawings:
Fig. 1 is the structural diagram of the present invention；
Fig. 2 is the schematic diagram of embodiment 1；
Fig. 3 is the schematic diagram of embodiment 1；
Label and corresponding parts title in attached drawing:
1- liquid reserve tank, 2- electric reciprocating pump, 3- acceleration switching valve, 4- flow control valve A, 5- flow control valve B, 6- are to be checked
Flowmeter, 7- data acquisition module, 8- computer, 9- pressure reducing valve.
Specific embodiment
To make the objectives, technical solutions, and advantages of the present invention clearer, below with reference to embodiment and attached drawing, to this
Invention is described in further detail, and exemplary embodiment of the invention and its explanation for explaining only the invention, are not made
For limitation of the invention.
Embodiment 1
As shown in Figure 1, the present embodiment includes
Liquid reserve tank 1, the liquid reserve tank 1 is for storing and providing single-phase liquid；
Electric reciprocating pump 2, the electric reciprocating pump 2 is connect with liquid reserve tank 1, for driving the single-phase liquid in pipeline；
Flow control valve A4, the flow control valve A4 is connect with electric reciprocating pump 2, for adjusting fluid in Trunk Line
Flow；
Acceleration switching valve 3, the acceleration switching valve 3 is in parallel with flow control valve A4, for adjusting the dynamic of fluid flow
Variation；
Flowmeter 6 to be checked, the flowmeter 6 to be checked is connected with the flow control valve A4, for detecting fluid to be measured
Dynamic flow, and the acceleration switching valve 3, flow control valve A4 and flowmeter to be checked 6 constitute test line；
Flow control valve B5, the flow control valve B5 is arranged on the by-pass line in parallel with test line, for adjusting
Save the flow of fluid in by-pass line；
Computer 8, the computer 8 are used to acquire the preservation, analysis and display of data；
Data acquisition module 7, the data acquisition module 7 are used to acquire the output signal of flowmeter 6 to be checked, and convert defeated
Computer 8 is arrived out；
It further include pressure reducing valve 9, test line is connect by pressure reducing valve 9 with liquid reserve tank 1 after crossing with by-pass line.
When the present embodiment is in use, monophasic fluid from liquid reserve tank 1 is divided into two-way after being driven by electric reciprocating pump 2, and one
Road flows into test line, flows through flow control valve A4 and acceleration switching valve 3, then flow out after 6 measuring flow of flowmeter to be checked；One
Road flows into by-pass line, converges after flowing through flow control valve B5 with test line, and the fluid after converging returns to liquid reserve tank 1, is formed
Open circulation circuit；And simultaneously, the flowmeter measurement signals in test line are output to computer by the conversion of data acquisition module 7
8, i.e. 8 convection current flowmeter measurement signal data of computer is shown.
When carrying out self-test to flowmeter, following steps are successively used:
A. systematic steady state parameter setting
Adjust Fluid pressure of the aperture of pressure reducing valve 9 to be arranged in entire pipeline；It successively closes, open acceleration switching valve 3,
And the aperture by adjusting flow control valve A4, flow control valve A5, maximum stream flow and minimum discharge are set；
B. dynamic flow is adjusted
Property requirements according to response, setting acceleration switching valve 3 closes the switching time with opening, by constantly closing and beating
Acceleration switching valve 3 is opened, realizes the dynamic change of flow；
C. response characteristic determines
When flowmeter 6 to be measured detects, the dynamic and steady state data recorded by data acquisition module 7 and computer 8 compares stream
Peak systole, valley and stable state maximum stream flow, the similarities and differences of minimum discharge are measured, as shown in Fig. 2, if the peak value and valley of flow pulsation
It is corresponding with 2 steady state flows respectively, then show that flowmeter 6 to be measured can satisfy the dynamic response demand under the ripple frequency；Such as
Shown in Fig. 3, if pulse amplitude is decayed, show that the dynamic response performance of flowmeter 6 to be measured is insufficient.
Above-described specific embodiment has carried out further the purpose of the present invention, technical scheme and beneficial effects
It is described in detail, it should be understood that being not intended to limit the present invention the foregoing is merely a specific embodiment of the invention
Protection scope, all within the spirits and principles of the present invention, any modification, equivalent substitution, improvement and etc. done should all include
Within protection scope of the present invention.
Claims (2)
1. a kind of fluid flowmeter dynamic response characteristic self-checking unit, it is characterised in that: including
Liquid reserve tank (1), the liquid reserve tank (1) is for storing and providing single-phase liquid；
Electric reciprocating pump (2), the electric reciprocating pump (2) connect with liquid reserve tank (1), for driving the single-phase liquid in pipeline；
Flow control valve A(4), the flow control valve A(4) it is connect with electric reciprocating pump (2), for adjusting fluid in Trunk Line
Flow；
Acceleration switching valve (3), the acceleration switching valve (3) is in parallel with flow control valve A(4), for adjusting the dynamic of fluid flow
State variation；
Flowmeter (6) to be checked, the flowmeter (6) to be checked is connected with the flow control valve A(4), for detecting fluid to be measured
Dynamic flow, and the acceleration switching valve (3), flow control valve A(4) and flowmeter to be checked (6) constitute test line；
Flow control valve B(5), the flow control valve B(5) it is arranged on the by-pass line in parallel with test line, for adjusting
Save the flow of fluid in by-pass line；
Computer (8), the computer (8) are used to acquire the preservation, analysis and display of data；
Data acquisition module (7), the data acquisition module (7) are used to acquire the output signal of flowmeter to be checked (6), and convert
It is output to computer (8).
2. a kind of fluid flowmeter dynamic response characteristic self-checking unit according to claim 1, it is characterised in that: further include
Pressure reducing valve (9), test line are connect by pressure reducing valve (9) with liquid reserve tank (1) after crossing with by-pass line.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201610273686.0A CN105973350B (en) | 2016-04-28 | 2016-04-28 | A kind of fluid flowmeter dynamic response characteristic self-checking unit |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610273686.0A CN105973350B (en) | 2016-04-28 | 2016-04-28 | A kind of fluid flowmeter dynamic response characteristic self-checking unit |
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| Publication Number | Publication Date |
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| CN105973350A CN105973350A (en) | 2016-09-28 |
| CN105973350B true CN105973350B (en) | 2019-05-21 |
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| CN107655551B (en) * | 2017-10-31 | 2024-10-25 | 潍柴动力股份有限公司 | Calibration device of mass fuel consumption instrument |
| EP4037458B1 (en) | 2019-09-30 | 2023-08-30 | Precision Planting LLC | System and method for testing an agricultural implement |
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| CN203745052U (en) * | 2014-03-25 | 2014-07-30 | 重庆市计量质量检测研究院 | Container parallel connection and reversing valve type pVTt method gas flow device |
| CN104457920A (en) * | 2014-12-15 | 2015-03-25 | 中国燃气涡轮研究院 | Device and method for dynamically calibrating liquid flow |
| CN204301896U (en) * | 2014-12-12 | 2015-04-29 | 合肥瑞纳表计有限公司 | An energy-saving heat meter flow verification device |
| CN204422030U (en) * | 2015-02-02 | 2015-06-24 | 姜跃炜 | Ultrasonic water meter flow verification standard set-up |
| CN105222865A (en) * | 2015-07-23 | 2016-01-06 | 中国计量学院 | Turbo flow meter on-line monitoring method and device |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB0905375D0 (en) * | 2009-03-28 | 2009-05-13 | Univ Cranfield | Method, controller and system for controlling the slug flow of a multiphase fluid |
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Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN203745052U (en) * | 2014-03-25 | 2014-07-30 | 重庆市计量质量检测研究院 | Container parallel connection and reversing valve type pVTt method gas flow device |
| CN204301896U (en) * | 2014-12-12 | 2015-04-29 | 合肥瑞纳表计有限公司 | An energy-saving heat meter flow verification device |
| CN104457920A (en) * | 2014-12-15 | 2015-03-25 | 中国燃气涡轮研究院 | Device and method for dynamically calibrating liquid flow |
| CN204422030U (en) * | 2015-02-02 | 2015-06-24 | 姜跃炜 | Ultrasonic water meter flow verification standard set-up |
| CN105222865A (en) * | 2015-07-23 | 2016-01-06 | 中国计量学院 | Turbo flow meter on-line monitoring method and device |
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